Looks promising, but apparently success varies a lot so personally I would only buy if someone reported success with it. I think the “canonical” thread for this is : A Neverending Story: PCIe 3.0/4.0/5.0 Bifurcation, Adapters, Switches, HBAs, Cables, NVMe Backplanes, Risers & Extensions - The Good, the Bad & the Ugly 
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